Fixed another case were transparency was lost by the PNG encoder, due
Fixed another case were transparency was lost by the PNG encoder, due

to improperly reducing the sample depth to 8.


UniQP/ImageMagick,kwm81/ImageMagick,kwm81/ImageMagick,kwm81/ImageMagick,Danack/ImageMagick,UniQP/ImageMagick,kwm81/ImageMagick,Danack/ImageMagick,UniQP/ImageMagick,UniQP/ImageMagick,Danack/ImageMagick,kwm81/ImageMagick,Danack/ImageMagick,Danack/ImageMagick,UniQP/ImageMagick,UniQP/ImageMagick,kwm81/ImageMagick,Danack/ImageMagick